[kylebgorman]

Python is notable among its peers in that it has a well-defined spec that is not just a list of bugs in the reference interpreter. It is thus important to note that some of the non-reference interpreters do already have the properties requested in TFA, but for whatever reason they haven't supplanted the reference implementation. (I suspect that the ability to drop down into C/C++, link against preexisting libs, or use tools like Cython and taking advantage of the compiler's optimizer, is actually more important than, say, the average PyPy speed boost. Certainly it is for me.)